Xfx 7950 watercooling

So I have a 7950 xfx dd card with 2x 6 pin, I want to water cool it and there is a full block for it but the thing that confused me is there are several different PCB boards that the 7950 comes with for the xfx card. All different forums are saying one thing and another is saying different. Some PCB boards work with it and others don't. Plz if any one can help me clarify this issue I would be so happy.

Well if you get the model number of the card and plug the info into this website http://www.coolingconfigurator.com/

It shall tell you if the PCB is reference based or not. If its referenced based, any/most full cover blocks will fit it. However if it is not (which i'm sure the XFX DD is not) then you will only usually be able to use universal compatibility water blocks with it (aka the ones that just do the GPU)

Thank you for  the info but also to clarify another thing one forum says that even the model number can't tell u witch PCB board it is that xfx did mix mached boards like I ordered mine with 1 dvi and I. Got one with 2 and the model numbers matched